Question

As a matter of fact, I didn’t know him ________．

1. A.
   first of all
2. B.
   after all
3. C.
   in all
4. D.
   at all

Answer 1

D
first of all首先；after all毕竟、终究；in all总共、总计；at all完全，根本。根据句意答案为D项。